<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区域 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 表单登录区域 -->
            <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
                <!-- 用户名 -->
                <el-form-item prop="username" >
                     <el-input v-model="loginForm.username"  prefix-icon="el-icon-user"></el-input>
                 </el-form-item>
                 <!-- 密码 -->
                  <el-form-item prop="password">
                     <el-input v-model="loginForm.password"  prefix-icon="el-icon-lock" type="password"></el-input>
                 </el-form-item>
                 <!-- 按钮区域 -->
                   <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                     <el-button type="info" @click="resetloginForm">重置</el-button>
                 </el-form-item>
            </el-form>

        </div>
    </div>
</template>

<script>
export default {
    data(){
        return{
            // 这是登录表单的数据绑定对象
            loginForm:{
                username:'admin',
                password:'123456'
            },
            //表单的验证规则对象
            loginFormRules:{
                //验证用户名是否合法
                username:[
                    { required: true, message: '请输入您的用户名', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                //验证密码是否合法
                password:[
                    { required: true, message: '请输入您的密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods:{
        //重置表单
        resetloginForm(){
          this.$refs.loginFormRef.resetFields();        
        },
        login(){
            this.$refs.loginFormRef.validate(async valid=>{
                if(!valid) return;
                const {data:res}=await this.$http.post('login',this.loginForm);
                if(res.meta.status!==200) return this.$message.error('登录失败！')
                
                this.$message.success('登陆成功！')
                //把token保存到客户端的sessionStroage中
                window.sessionStorage.setItem("token",res.data.token)
                this.$router.push("/home")
           });
        }
    }
}
</script>

<style lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color:#fff ;
    border-radius: 3px;//圆角边框
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);

    .avatar_box{
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        img{
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }
}
.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding:0 20px ;
    box-sizing: border-box;
}
.btns{
   display: flex; 
   justify-content:center ;
}

</style>